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I have checked with other headphones,and my small 2:1 home theatre also complies the existence of the problem.

Moreover when I check my sound system through Pulseaudio "test sound" utility, I can see there are six buttons shown, whereas I should only have lest and right buttons as I have 2:1 home theatre (connected on the rear audio port) and a normal headphone (connected on the front side).

I also have jackd installed and configured to run along-with pulseaudio.

On the Screenshot you can see Jack Sink is working with five output ports where I should only have Front Left and front right.

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Why don't you use the image tag facility instead of using "img src"? – user25656 Feb 3 '13 at 17:04
@vasa1: thanks for the advice. Can you help me regarding to my problem ? – Curious Apprentice Feb 3 '13 at 19:35

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